Rhode Island Department of Education Lesson Plan Lesson Title: Polar and Nonpolar Covalent Bonds State Standards:(GLEs/GSEs) GSE - PS1 (9-11) - 4 National Standards: Context of Lesson: This class will be after the lessons on molecular geometry. In this class the students will be introduced to the polarity of bonds. The students will learn that covalent bonds can be polar or nonpolar. Opportunities to Learn: Depth of Knowledge: Prerequisite Knowledge: Plans for Differentiating Instruction: Accommodations and modifications: Environmental factors: Materials:
Objectives:
The students will describe how electronegativities determine the distribution of charge in a polar molecule.
The students will label the positive and negative dipoles in a polar molecule.
Instruction: Opening:
We just learned about molecular orbitals and molecular geometry.
Through these topics we saw how orbitals and molecules are shaped.
We talked about how orbitals are very big compared to the electrons that inhabit them and the connection to the Heisenberg uncertainty principle.
In todays class we will take a look at covalent bonds that we have seen before but haven’t looked into as much.
Polar and nonpolar covalent bonds.
Engagement:
Does anyone remember what the term electronegativity means?
The ability of an atom to attract electrons when the atom is in a compound.
What does that mean?
Is there a trend in the periodic table?
Increase as we go across (left to right) the periodic table.
Decrease as we go down (top to bottom) the period table.
Why?
Valence electrons.
Electronegativities are very important in polar and nonpolar bonds; they determine if a covalent bond is polar or nonpolar.
Polar bond.
Uneven sharing of electrons.
Creates dipoles.
Examples.
H2O, HF
Direction of dipole moment.
How polar molecules align in electric fields.
Nonpolar bond.
Even sharing of electrons.
Examples.
O2, N2, CH4
Closure:
Recap the days activities.
Tomorrow we’re going to talk about more forces.
Assessment: I will formatively assess my students on this topic. This will also be assessed on the unit exam. Reflections: (only done after lesson is enacted) Student Work Sample 1 – Approaching Proficiency: Student Work Sample 2 – Proficient: Student Work Sample 3 – Exceeds Proficiency:
Lesson Plan
Lesson Title: Polar and Nonpolar Covalent Bonds
State Standards: (GLEs/GSEs)
GSE - PS1 (9-11) - 4
National Standards:
Context of Lesson:
This class will be after the lessons on molecular geometry. In this class the students will be introduced to the polarity of bonds. The students will learn that covalent bonds can be polar or nonpolar.
Opportunities to Learn:
Depth of Knowledge:
Prerequisite Knowledge:
Plans for Differentiating Instruction:
Accommodations and modifications:
Environmental factors:
Materials:
Objectives:
Instruction:
Opening:
Engagement:
Closure:
Assessment:
I will formatively assess my students on this topic. This will also be assessed on the unit exam.
Reflections:
(only done after lesson is enacted)
Student Work Sample 1 – Approaching Proficiency:
Student Work Sample 2 – Proficient:
Student Work Sample 3 – Exceeds Proficiency: